【摘要】 进行了两片预应力钢—混凝土组合简支梁静载全过程试验研究 ,使其中一片受正弯矩作用 ,另一片受负弯矩作用 .分析了荷载 -变形关系、截面应变分布、界面相对滑移以及预应力钢筋的应力增量变化规律 ,理论分析结果和试验结果较为吻合 .更多还原

【Abstract】 This paper examines experimentally the behavior of prestressed, composite steel-concrete beams. Two beams were tested, one subjected to positive bending moment and the other to negative bending moment. The load was plotted against the deflection, the strain in the concrete, steel beam, and the stress increment of prestressed strands, as well as the relative slip between the concrete and the steel. The values predicted by nonlinear limited element model and the simplified calculation theory were found to correlate well with the measured data.更多还原